ESP32 Forum

Dear Community,

I am using analog inputs of the ESP32 WROOM32. I know that the voltage range is from 0-1V, but I am worried about how much current can the analog input handle. I have heard that the max is 12 mA and recommended 6 mA. Is that true?

Thanks in advance.

As the analog input is an (high-impedance) input, it will generally use a negligable amount of current. You can connect something to it that can source 6 or 12mA, or more, but it will never draw that much. I think you're confusing inputs and outputs: outputs can indeed source a limited amount of current, and the 12mA number is correct for the ESP8266 there, but as I mentioned before: an analog input is not an output.